Carburetor



Patented den. 22, W24.

EUGENE G. RICHARD, 0F FLINT, MICHIGAN.

GABBURETOR.

Application filed December 11, 1918. Eerisl No. 266,176.

Ser. No. 262,973, filed November 18, 1918,

and'l have, in the aocom anying drawing, illustrated such an emb iment,as that 1s a form which I have found very practical. My presentimprovements are, however, capable of being embodied and desirable whenembodied in. other structures.

The main objects of thisinvention are:

First, to provide animproved carburetor with means whereby thetemperature of the air passing to the carburetor is efiectivelycontrolled with the adjustment of the throttle.

Second, to provide an improved carburetor with an improved means forregulating the temperature of the air passing to andv through thecarburetor.

Further objects, and objects relating to structural details, willdefinitely appear from the detailed description to follbw.

I accomplish the objects of my invention by the devices and meansdescribed in the following specification. The invention is clearlydefined and pointed out inthe claims. I

A structure which is a preferred embodiment. of my invention is clearlyillus-' trated in the accompanying drawing, forminga part of thisspecification, in which.

Fig. I is a front elevation of my improved carburetor. Fig. II is a rearelevation of the structure shown in Fig. I with the addition of a porvtion of the hot air supply connection.

Fig. H1 is an end view looking from the left of Fig. I.

Fig. IV is a detail front elevation with the parts in the positionoccupied when the throttle valve is fully opened.

Fig. V. is a detail vertical section on a line corresponding to line 55of Figs. Ill and VI.

Fig. V1 is a detail-horizontal section on a. line comes ondin to line6-45 of Fi I, Hi and V? gs Fig. VII is a detail vertical section throughthe air inlets on a line corresponding to line 7--7 of Figs. III and VI.

F ig. VIII is a transverse vertical section on a line corresponding toline 8-8 of F ig. V1.

In the drawing similar reference characters refer to similar partsthroughout the several views, and the sectional views are taken lookingin the direction of the little arrows at t ends of the section lines.

Referring to the drawing, the body of my improved carburetor consists ofthe chambered members 1 and 2, the chamber in the member 1 being an airsupply chamher and that in the member 2 a mixing chamber. The member 2is provided with a flange-.3 for attachment to an engine with a deliverypasse e 4 controlled by the throttle 5. The mom er 1 has a nipple-likeprojection 6 at one side with which the air inlet passage 7 engages asshown in Fig. V. The fuel reservoir 8 is disposed below the bodymember 1. The means for supplying and controlling the level of the fuelin the reservoir rare not shown; as they form no part of my presentinvention.

The air supply chamber communicates with the mixing chamber through theport 9 which is controlled by the suction actuated valve member 10. inthe embodiment illustrated the fuel nozzle 11 delivers through thetubular valve member 12 to a carbureting chamber 13 within themen her10. This carbureting chamber 13 delivers to the mixing chamber above theport The member 10 is provided with a'dependv ing valve sleeve 14telescoping over to the valve member 12 and a tapered primary air inletvalve 15 coacting with the valve mem' ber 12. The valve member 12 isactuated from the rock shaft 16 having an arm 17 thereon engaging thevalve and an arm 18 adapted to engage the sleeve lei when the member 12is in its fully retracted position, thus holding the suction actuatedinemher to its seat. I

The rock shaft 16 projects through the casing and is provided with anactuated arm 19 and a stop arm 20. These parts and their operation aredescribed in detail and claimed in my (re-pending application. The airinlet passage '1' has rearwardly ofisct hot and. cold air inletconnections 21 and respectively. These inlet connections are arrsnged'inthe same vertical plane." In practice the inlet connection 21 conto ahot ainconduit 23. These air inlet connections are'hontrollod by thevalves 24 and. 25 provided with stems 26 and 27. These stems projectatthe rear to receive the arms 28 and 29 respectively, the arms beingconnected by the link 30. These arms are preferably adjustably mountedon the stems to properly position the valves. They are arranged so thatwhen the hot air valve is closed the cold air'valvc is opened and viceversa. The hot air inlet valve is preferably cut away at 31 so that whenclosed it permits the passage of a limited quanity of hot air.

he valve stem 27 projects forwardly through a bearing 32 in the passageIncinbcr '4" to receive an arm 32. The stem 33 of the throttle valve 5projects through the front of t e carburetor body to receive anactuating arm 3% to which an actuating rod 35 is connected. The arms32-and 34 are operativcl connected by means of the link 3.6 which Ispivoted to the arm 32 and slidably connected to the arm 34. A coiledspring 37 is arranged on this link, one end of the spring engaging thearm 34 and the other a rest. 38 on the link. A spring 39 is arranged onthe link between the arm and the pin 40 at the outer end of the link.The spring 37 is of sufficient strength so that when the throttle valveis opened the spring actuates the air valves which are arranged so thatwith the throttle. closed the hot air valve is fully opened and the coldair valve closed, the hot air valve closing with the opening of thethrottle valve and the cold air valve opening and closing with theopening and closing of the throttle valve. T he temperature of the airpassing to. the carburst/or is thus effectively controlled, it beingfound that satisfactory results are produced whenthe temperature israised upon the closing movement of the throttle, and vice verse.

To further control the temperature 1 provide a. heating unit or element42 within the mixing chamber adapted to be heated by means of theexhaust gases. Thisheating chamber has a heating medium connection 45controlled by the valve 44. This valve is controlled independently ofthe throttle and inlet valves so that it maybe left full on -in coldweather or closed in warm weather, and being capable of being adjustedindependcntly of the air inlet and throttle sub WW stantially allconditions may be satisfactorilv met.

M yimprovcd carburetor is highly efiicient both in too inatwr ofcarburetion and in the e onomy of fuel.

l have illustrated and described my iniprovements in the form in which Ihave eni bodied the same. I have not attempted to illustrate or describecertain adaptations or modifications which may be desirable as I believethe disclosure made will enable those skilled-in the art to which myinvention re latcs to'cmbodv or adapt the same as conditions may renderdesirable.

Having thus described my invention, what I I claim as new and desire tosecure by Letters Patent, is:

1. In a carburetor, the combination of a throttle valve provided with astem projecting at the front of the carburetor, an arm on said stem, anair supply passage at one side of the carburetor provided withrearwardly ofisethot and cold air inlets disposed in substantially thesame plane, valves for said hot and cold air inlets provided with rcarvvardly projecting stems, the stem of one of said air inlet valvesalso project ing forwardly above the air supply passage whichis providedwith a bearing therefor, arms on the rearwardly projecting ends of saidinlet valve stems, a link connecting said arms, said valves beingdisposed so that they are opened and closed alternately, an arm on theforwardly projecting stem, a link connected to such arm and slidablyconnected to said throttle valve arm. a spring disposed on said link ofsuch strength as to actuate said air inletvalves and permit furtheractuation or" the throttle valve, a heating member disposed in thecarburetor'in the path of the mixture, a heating medium-connection forsaid heating member disposed above said fill air inlet passage, and avalve for said heating medium connection, v

2. In a carburetor, the combination of a throttle valve provided with astem projecting at the front of the carburetor, an arm on said stem, anair supply passage at one side of the carburetor provided withrearwardly oilsct hot and cold air-inlets disposed in substantially thesame plane, valves for said hot and cold air inlets provided withrearwardly projecting stems, the stem of one of said air inlet valvesalso projecting forwardly above the air supply passage which is providedwith a bearing therefor. arms on'thc rearwardlyprojecting ends of saidinlet valve stems, a link connecting said arms, said Valves beingdisposed so that they are opened and closed alternately, the hot side ofthe carburetor 'provi vardly above the air supply passegewhich .wardlyabove the i Supply passagdwfiich menses a ing at the frontj'of;thecarbnretor, an am an arm on the forwardly projecting stem, a on Saidstem, nnfleir supply ssssge at one link connected to such arm andslidebly coned with rearnected; to said throttle valve arm, a springwerdly projecting stem, the stem of one of disposed on said link of suchstrength as to said air inlet valves also projecting foractuate said airinlet valves and ermit further actuation of the throttle valve, a heatisprovided with a bearing therefor, arms adjustebly mounted on thereerwardly project- 112g ends of said inlet valve stems, c linkconnecting said arms, said valves being. disposed so that they areopened and closed alternately, an arm adjustehly mounted on theforwardly projecting stem, a link con nected to such arm and slideblyconnected to said throttle valve arm, and a sprin disposed on saidlink'at each side of said t rottle valve arm of such strength as toactuate said air inlet valves and permit further actuation of thethrottle valve.

4. In a carburetor, the combination of a throttle valve provided with astem projecting at the frontof the carburetor, an arm on slidablyconnected to said throttle valve arm, said stem, an air supplypnssagleat one side springs disposed on said link of such of the carburetor"'ovided-wit rearwardly strength. as to actuate said air inlet valvesoffset hot and co (1 air inlets disposed in and permit further actuationof the throttle substantially the same plane, valves for saidvalve, aheating member disposed in the carhot and cold air inlets provided withreal' buretor in the path of the mixture, a heating wardly projectingstems, the stem of one of medium connection for said heating memsaidairinlet valves projecting forher, and a valve for said-heating mediumconnection.

In Witness whereof, I have hereunto set path of the mixture, a heatingmedium connection for said heating member disposed said heating mediumconnection.

5. In a carburetor, the combination of a throttle valve provided with astem, an arm on sdid stem, an air supply passage provided said hot andcold air inlets provided with. projecitingstems, arms on said inletvalve stems, a link connectin said arms,isaid valves being disposed so tat they are opened and closed alternately, a link connected to an arm onone of said inlet valve stems and is provided with a hearing therefor,arms on the rearwardly rejecting ends of said inlet my hand and seal inthe presence of two witvalve stems, a ink connecting said arms, messes.I

said valves being disposed so that they are EUGENE C. RICHARD. [L. 8.]opened and closed alternately, the hot airfin- Witnesses:

let valve permitting the passage of a limited VEDA G. Pm'nrs,

quantity of air when in its closed position, BERTHA MoCoLLUu.

ing member disposed in the carburetor in theabove said air inletpassage, and a valve for W th hot and cold air inlets, valves for

